; 210_artist_inkpen.scm
; last modified/tested by Paul Sherman [gimphelp.org]
; Saturday, 06/27/2020 on GIMP 2.10.20
;==================================================
;
; Installation:
; This script should be placed in the user or system-wide script folder.
;
; Windows 7/10
; C:\Program Files\GIMP 2\share\gimp\2.0\scripts
; or
; C:\Users\YOUR-NAME\AppData\Roaming\GIMP\2.10\scripts
;
;
; Linux
; /home/yourname/.config/GIMP/2.10/scripts
; or
; Linux system-wide
; /usr/share/gimp/2.0/scripts
;
;==================================================
;
; LICENSE
;
; This program is free software: you can redistribute it and/or modify
; it under the terms of the GNU General Public License as published by
; the Free Software Foundation, either version 3 of the License, or
; (at your option) any later version.
;
; This program is distributed in the hope that it will be useful,
; but WITHOUT ANY WARRANTY; without even the implied warranty of
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
; GNU General Public License for more details.
;
; You should have received a copy of the GNU General Public License
; along with this program. If not, see .
;
;==============================================================
; Original information
;
; Inkpen script for GIMP 2.2
; Copyright (C) 2007 Eddy Verlinden
;==============================================================
(define (210-inkpen
img
drawable
color
lightness
length
outlines?
grid?
inMerge
)
(gimp-image-undo-group-start img)
(if (not (= RGB (car (gimp-image-base-type img))))
(gimp-image-convert-rgb img))
(let* (
(width (car (gimp-drawable-width drawable)))
(height (car (gimp-drawable-height drawable)))
(old-selection (car (gimp-selection-save img)))
(image-type (car (gimp-image-base-type img)))
(blur (* height 0.01 ))
(gridcolor '(128 128 255))
(layer-type (car (gimp-drawable-type drawable)))
(layer-tempa (car (gimp-layer-new img width height layer-type "tempa" 100 LAYER-MODE-NORMAL-LEGACY)))
(layer-tempb (car (gimp-layer-new img width height layer-type "tempb" 100 LAYER-MODE-NORMAL-LEGACY)))
(layer-tempc (car (gimp-layer-new img width height layer-type "tempc" 100 LAYER-MODE-NORMAL-LEGACY)))
(layer-tempd (car (gimp-layer-new img width height layer-type "tempd" 100 LAYER-MODE-NORMAL-LEGACY)))
(layer-tempe (car (gimp-layer-new img width height layer-type "tempe" 100 LAYER-MODE-NORMAL-LEGACY)))
(layer-tempf (car (gimp-layer-new img width height layer-type "tempf" 100 LAYER-MODE-NORMAL-LEGACY)))
(layer-tempg (car (gimp-layer-new img width height layer-type "tempg" 100 LAYER-MODE-NORMAL-LEGACY)))
)
(if (eqv? (car (gimp-selection-is-empty img)) TRUE)
(gimp-drawable-fill old-selection 2)) ; so Empty and All are the same.
(gimp-selection-none img)
(gimp-drawable-fill layer-tempb 2)
(gimp-image-insert-layer img layer-tempb 0 -1)
(gimp-edit-copy drawable)
(gimp-floating-sel-anchor (car (gimp-edit-paste layer-tempb 0)))
(gimp-hue-saturation layer-tempb 0 0 lightness 0)
(gimp-threshold layer-tempb 125 255)
(gimp-drawable-fill layer-tempa 2)
(gimp-image-insert-layer img layer-tempa 0 -1)
(plug-in-randomize-hurl 1 img layer-tempa 25 1 1 10)
(plug-in-mblur 1 img layer-tempa 0 length 135 1 0)
(gimp-threshold layer-tempa 215 230)
(gimp-drawable-fill layer-tempd 2)
(gimp-image-insert-layer img layer-tempd 0 -1)
(gimp-edit-copy drawable)
(gimp-floating-sel-anchor (car (gimp-edit-paste layer-tempd 0)))
(gimp-hue-saturation layer-tempd 0 0 lightness 0)
(gimp-threshold layer-tempd 75 255)
(gimp-drawable-fill layer-tempc 2)
(gimp-image-insert-layer img layer-tempc 0 -1)
(plug-in-randomize-hurl 1 img layer-tempc 25 1 1 10)
(plug-in-mblur 1 img layer-tempc 0 length 45 0 0)
(gimp-threshold layer-tempc 215 230)
(gimp-layer-set-mode layer-tempa 10)
(gimp-layer-set-mode layer-tempc 10)
(gimp-image-merge-down img layer-tempc 0)
(set! layer-tempc (car (gimp-image-get-active-layer img)))
(gimp-layer-set-mode layer-tempc 3)
(gimp-image-merge-down img layer-tempa 0)
(set! layer-tempa (car (gimp-image-get-active-layer img)))
(gimp-layer-set-mode layer-tempa 0)
(gimp-image-merge-down img layer-tempc 0)
(set! layer-tempa (car (gimp-image-get-active-layer img)))
(gimp-layer-set-mode layer-tempa 0)
;------------------------------------------------
(if (eqv? outlines? TRUE)
(begin
(gimp-image-insert-layer img layer-tempe 0 -1)
(gimp-edit-copy drawable)
(gimp-floating-sel-anchor (car (gimp-edit-paste layer-tempe 0)))
(plug-in-photocopy 1 img layer-tempe 5.0 1.0 0.0 0.8)
(gimp-levels layer-tempe 0 215 235 1.0 0 255)
(gimp-layer-set-mode layer-tempe 3)
(gimp-image-merge-down img layer-tempe 0)
(set! layer-tempa (car (gimp-image-get-active-layer img)))
))
;------------------------------------------------
(gimp-context-set-foreground color)
(gimp-drawable-fill layer-tempf 0)
(gimp-image-insert-layer img layer-tempf 0 -1)
(gimp-layer-set-mode layer-tempf 4)
(gimp-image-merge-down img layer-tempf 0)
(set! layer-tempa (car (gimp-image-get-active-layer img)))
;------------------------------------------------
(if (eqv? grid? TRUE)
(begin
(gimp-drawable-fill layer-tempg 2)
(gimp-image-insert-layer img layer-tempg 0 -1)
(gimp-image-lower-item img layer-tempg)
(plug-in-grid 1 img layer-tempg 1 16 8 gridcolor 64 1 16 8 gridcolor 64 0 2 6 gridcolor 128)
(plug-in-gauss 1 img layer-tempg 0.5 0.5 0)
(gimp-layer-set-mode layer-tempa 9)
(gimp-image-merge-down img layer-tempa 0)
(set! layer-tempa (car (gimp-image-get-active-layer img)))
))
;------------------------------------------------
(gimp-image-select-item img CHANNEL-OP-REPLACE old-selection)
(gimp-selection-invert img)
(if (eqv? (car (gimp-selection-is-empty img)) FALSE) ; both Empty and All are denied
(begin
(gimp-edit-clear layer-tempa)
))
(gimp-item-set-name layer-tempa "Inkpen")
(gimp-image-select-item img CHANNEL-OP-REPLACE old-selection)
(gimp-image-remove-channel img old-selection)
(if (= inMerge TRUE)(gimp-image-merge-visible-layers img EXPAND-AS-NECESSARY))
(gimp-image-undo-group-end img)
(gimp-displays-flush)
)
)
(script-fu-register "210-inkpen"
"Inkpen"
"Creates a inkpen drawing effect"
"Eddy Verlinden "
"Eddy Verlinden"
"2007, juli"
"*"
SF-IMAGE "Image" 0
SF-DRAWABLE "Drawable" 0
SF-COLOR "Ink Color" '(0 0 0)
SF-ADJUSTMENT "Lightness" '(0 -100 100 1 10 0 0)
SF-ADJUSTMENT "Stroke length" '(30 10 50 1 10 0 0)
SF-TOGGLE "Outlines" TRUE
SF-TOGGLE "Blue grid" FALSE
SF-TOGGLE "Merge layers when complete?" FALSE
)
(script-fu-menu-register "210-inkpen" "/Script-Fu/Artist")